[Samba] change_to_user_impersonate

[Epsilon Minus]

Hi

I have a problem with a samba as a member.  When I want to access the
folders with "normal users" it returns the following error.

If I access with a Domain Admin user I can access without problem, and
the strangest thing. At that moment I can access with the "normal
user" only 1 time.

Can you think what can it be?

Thank you very much!

This is the log when I can't log in with the normal user.

[2021/09/09 14:33:51.268913,  4] ../../source3/smbd/vfs.c:805(vfs_ChDir)
  vfs_ChDir to /srv/samba/sistemas
[2021/09/09 14:33:51.268968,  3]
../../source3/smbd/service.c:155(chdir_current_service)
  chdir (/srv/samba/sistemas) failed, reason: Permission denied
[2021/09/09 14:33:51.269013,  0]
../../source3/smbd/uid.c:448(change_to_user_internal)
  change_to_user_internal: chdir_current_service() failed!
[2021/09/09 14:33:51.269106,  3]
../../source3/smbd/smb2_server.c:3254(smbd_smb2_request_error_ex)
  smbd_smb2_request_error_ex: smbd_smb2_request_error_ex: idx[1]
status[NT_STATUS_ACCESS_DENIED] || at
../../source3/smbd/smb2_server.c:2552
[2021/09/09 14:33:51.274299,  5]
../../source3/smbd/uid.c:326(change_to_user_impersonate)
  change_to_user_impersonate: Skipping user change - already user
[2021/09/09 14:33:51.274396,  4] ../../source3/smbd/vfs.c:805(vfs_ChDir)
  vfs_ChDir to /srv/samba/sistemas
[2021/09/09 14:33:51.274445,  3]
../../source3/smbd/service.c:155(chdir_current_service)
  chdir (/srv/samba/sistemas) failed, reason: Permission denied
[2021/09/09 14:33:51.274487,  0]
../../source3/smbd/uid.c:448(change_to_user_internal)
  change_to_user_internal: chdir_current_service() failed!
[2021/09/09 14:33:51.274569,  3]
../../source3/smbd/smb2_server.c:3254(smbd_smb2_request_error_ex)
  smbd_smb2_request_error_ex: smbd_smb2_request_error_ex: idx[1]
status[NT_STATUS_ACCESS_DENIED] || at
../../source3/smbd/smb2_server.c:2552
[2021/09/09 14:33:51.296796,  5]
../../source3/smbd/uid.c:326(change_to_user_impersonate)
  change_to_user_impersonate: Skipping user change - already user
[2021/09/09 14:33:51.296890,  4] ../../source3/smbd/vfs.c:805(vfs_ChDir)
  vfs_ChDir to /srv/samba/sistemas
[2021/09/09 14:33:51.296939,  3]
../../source3/smbd/service.c:155(chdir_current_service)
  chdir (/srv/samba/sistemas) failed, reason: Permission denied
[2021/09/09 14:33:51.296980,  0]
../../source3/smbd/uid.c:448(change_to_user_internal)
  change_to_user_internal: chdir_current_service() failed!
[2021/09/09 14:33:51.297061,  3]
../../source3/smbd/smb2_server.c:3254(smbd_smb2_request_error_ex)
  smbd_smb2_request_error_ex: smbd_smb2_request_error_ex: idx[1]
status[NT_STATUS_ACCESS_DENIED] || at
../../source3/smbd/smb2_server.c:2552
[2021/09/09 14:33:51.307922,  5]
../../source3/smbd/uid.c:326(change_to_user_impersonate)
  change_to_user_impersonate: Skipping user change - already user


smb.conf

cat /etc/samba/smb.conf
[global]
security = ADS
workgroup = LAN
realm = LAN.GLAUX
log file = /var/log/samba/%m.log
log level = 5
idmap config * : backend = tdb
idmap config * : range = 3000-7999
    idmap config LAN : backend = rid
        idmap config LAN : range = 10000-999999
username map = /etc/samba/user.map
vfs objects = acl_xattr
map acl inherit = yes
store dos attributes = yes

[sistemas]
path=/srv/samba/sistemas
read only = no